The compound formed from potassium (K) and nitrogen (N) is potassium nitride (K₃N).

Here's how to figure that out:

* Potassium is in group 1 of the periodic table, making it a +1 cation (K⁺).

* Nitrogen is in group 15, making it a -3 anion (N³⁻).

To form a neutral compound, you need three potassium ions (3 x +1 = +3) to balance out one nitrogen ion (-3). This gives the formula K₃N.